Calendar



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CALENDAR Filed Sept. 26, 1954 LEE-i Patented Apr. 7, 1936 UNITED STATES PATENT OFFICE CALENDAR Application September 26, 1934, Serial No. 745,501

2 Claims.

My invention relates to calendars, and particularly to what is known in the art as multiple-year calendars, and the general object of my invention is to provide such a calendar which 5 is simple, inexpensive, easily manipulated, and

adapted to have advertising matter associated therewith.

Other objects and advantages will appear hereinafter, and while I show herewith and will describe preferred forms of construction, I do not limit myself to such preferred forms, and it is to be understood that various changes and adaptations may be made therein without de parting from the spirit of my invention as hereinafter claimed.

My invention is illustrated in the annexed drawing, which forms a part of this specification, in which Figure 1 is a face view of my complete calendar, showing a rectangle wherein advertising material may be incorporated,

Figure 2 is an edge view of my complete calendar, and

Figure 3 is a face view of an alternate form of my calendar in which the range is extended.

My calendar comprises two dials II and I2, made of any suitable material such as celluloid, and pivoted together with the dial ll upon the dial I2, by means of a. rivet or eyelet I3, or otherwise. Dial II is round, and the used portion of dial I2 is also round or substantially round, although the dial 12 may be printed upon a sheet of any shape, such as the rounded rectangle illustrated in Figure 1, as may be convenient for handling the calendar, or for incorporating advertising matter thereupon, as within the rectangle 25 illustrated.

On dial H, adjacent to its outer edge, appears a ring 14 of characters, being designations of the seven days of the week (as for example: Su, Mo, Tu, We, Th, Fr, Sa) in five continuous series, making 35 characters in all. Within this ring I4 is a second ring 15 of numerals representing years. These appear in seven groups of four, the first year of each group being a leap year, and each group being separated from the next by a space equivalent to that occupied by one year numeral. Hence there are 35 characters or blanks in this ring also. Within this ring [5 is another ring it of characters or signs indicating the occurrence of Easter Sunday in each of the years immediately adjacent the sign. These signs are to indicate that Easter occurs on next to the last Sunday in March, 5 indicate that Easter occurs on the last Sunday in March, indicate that Easter occurs first Sunday in April, indicate that Easter occurs second Sunday in April, indicate that Easter occurs third Sunday in April, and indicate that Easter occurs fourth Sunday in April. 5

It should be understood that similar or other signs might be used to indicate the occurrence of other movable holidays, such as the Hebrew New Year or Passover.

On dial l2, appearing adjacent to the outer 20 edge of dial II, is a ring 2| of numerals corresponding to the days of the month, 1 to 31 inclusive, there being four spaces, or the equivalent area, left blank. Outside this ring 21 is a ring 22 of characters representing the months of the 25 year (as for example: Jan, Jan, Feb, Feb, Mar, Apr, May, Jun, Jul, Aug, SEE Oct, Nov, Dec) occupying 14 spaces and leaving 21 spaces, or the equivalent area, blank. Outside this ring 22 is a ring 23 of numerals indicating the number of 30 days in the month immediately adjacent.

An alternate form of inner .dial is shown in Figure 3, wherein the range of the calendar is extended from 28 to 56 years, by incorporating a second ring 3| of year numerals. Additional 35 rings of numerals may be added to extend the range to any desired number of years. As the calendar has been designed to take advantage of the fact that the relationship of day-of-month to day-ofweek repeats on a 28-year cycle, it is 4 not necessary to add the second ring 3| of numerals, but simply to add or subtract 28 years or multiples thereof. For example, to find a date from 1906 to 1933, add 28 and use the resulting year number as found in Figure 1; from 1962 to 1989, subtract 28 and use the resulting year number; from 1990 to 2017, subtract 56 years, etc. In Figure 3 the outer dial I2 is also shown with modifications and is carried upon a round sheet.

The calendar for any desired month of any to on the to on the 10 to on the to on the desired year is determined by rotating the inner dial until the year numeral appears on the same radial section with the month designation. In Figure 1 the calendar for July 1938 appears, among others, while in Figure 3 the calendar for February 1936 (or February 1964) appears, among others. In leap years (as in the illustration of Figure 3) the characters Jan and Feb are used instead of the oharacterfian aFFeb (without underline) which are otherwise employed. The characters to be used in leap years may be otherwise distinguished, as for example by parentheses: (Jan) and (Feb).

While the forms of embodiment of the present invention as above disclosed constitute preferred forms, it is to be understood that other forms might be adapted within the scope of the invention, which I claim as follows:

1. A multiple-year calendar, comprising in combination: an outer dial, an inner dial, and means holding said dials in rotatable relation in respect to each other; said dials carrying concentric rings of characters, and having radial lines dividing each of said rings into 35 equal angular sections, one of the rings of said outer dial carrying the numerals 1 to 31 inclusive, indicating the days of the month, each numeral being Within one of the aforesaid angular sections, and four of such sections being blank, another of the rings of said outer dial carrying characters representing the months of the year, there being 14 such characters, the months of January and February each being represented twice, and 21 of such sections being blank, one of the rings of said inner dial carrying in 5 continuous series characters representing the days of the week, each being within one of the aforesaid angular sections, and another of the rings of said inner dial carrying, in 7 groups of 4 years each, numerals representing years, 7 sections being blank.

2. A multiple-year calendar in accordance with claim 1, having an additional concentric ring of characters on said inner dial, such ring of characters appearing in conjunction with the numerals representing years, and indicating the occurrence of Easter Sunday in each such year.

CHARLES H. COLVIN. 

